EP2912723A1 - Radar level gauge system with reduced antenna reflection - Google Patents
Radar level gauge system with reduced antenna reflectionInfo
- Publication number
- EP2912723A1 EP2912723A1 EP13848726.9A EP13848726A EP2912723A1 EP 2912723 A1 EP2912723 A1 EP 2912723A1 EP 13848726 A EP13848726 A EP 13848726A EP 2912723 A1 EP2912723 A1 EP 2912723A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- opening
- horn antenna
- polarization
- electromagnetic
- level gauge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/284—Electromagnetic waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/88—Radar or analogous systems specially adapted for specific applications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/024—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using polarisation effects
- G01S7/026—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00 using polarisation effects involving the transmission of elliptically or circularly polarised waves
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
- G01S7/038—Feedthrough nulling circuits
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/225—Supports; Mounting means by structural association with other equipment or articles used in level-measurement devices, e.g. for level gauge measurement
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/02—Waveguide horns
Definitions
- a radar level gauge system for measuring the filling level of a product contained in a tank are well-known.
- a radar level gauge system generally comprises a transmitter for transmitting an electromagnetic signal towards the surface of the product, a receiver for receiving the electromagnetic signal reflected at the surface of the product, and a signal processing device for determining the level of the product in the tank based on the time-of-flight of the transmitted and reflected electromagnetic signal.
- the measurement unit 2 of the radar level gauge system 1 in fig 1 comprises a transceiver 10, processing circuitry, here in the form of a microprocessor 11 , an interface 12, communication/power supply lines 13 and a tank feed-through 15.
- the electrical distance is proportional to the physical distance along the above-mentioned path 25.
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Radar, Positioning & Navigation (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- Waveguide Aerials (AREA)
- Radar Systems Or Details Thereof (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Aerials With Secondary Devices (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/659,021 US8970424B2 (en) | 2012-10-24 | 2012-10-24 | Radar level gauge system with reduced antenna reflection |
PCT/SE2013/000153 WO2014065736A1 (en) | 2012-10-24 | 2013-10-02 | Radar level gauge system with reduced antenna reflection |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2912723A1 true EP2912723A1 (en) | 2015-09-02 |
EP2912723A4 EP2912723A4 (en) | 2016-06-29 |
EP2912723B1 EP2912723B1 (en) | 2020-06-03 |
Family
ID=49543437
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13848726.9A Active EP2912723B1 (en) | 2012-10-24 | 2013-10-02 | Radar level gauge system with reduced antenna reflection |
Country Status (4)
Country | Link |
---|---|
US (1) | US8970424B2 (en) |
EP (1) | EP2912723B1 (en) |
CN (2) | CN203287080U (en) |
WO (1) | WO2014065736A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8970424B2 (en) * | 2012-10-24 | 2015-03-03 | Rosemount Tank Radar Ab | Radar level gauge system with reduced antenna reflection |
CA2993017A1 (en) * | 2014-07-21 | 2016-01-28 | Adam MAUNDER | Sensing system and method for measuring a parameter of at least a dielectric substance in a tank layer thickness and dielectric property measurements in multilayer systems |
US10015654B2 (en) | 2015-11-18 | 2018-07-03 | Discoery Limited | Tracking and theft-recovery system for mobile assets |
US10340571B2 (en) | 2017-02-22 | 2019-07-02 | Honeywell International Inc. | Rope conductor for guided wave radar coaxial waveguide |
US11047725B2 (en) * | 2018-04-26 | 2021-06-29 | Rosemount Tank Radar Ab | Radar level gauge system with dielectric antenna |
US11105883B2 (en) * | 2018-07-25 | 2021-08-31 | Denso International America, Inc. | Circular polarized angle of arrival measurement system |
Family Cites Families (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB962601A (en) | 1961-02-18 | 1964-07-01 | Telefunken Patent | Improvements in or relating to impedance compensating arrangements |
FR2450509A1 (en) * | 1979-03-02 | 1980-09-26 | Thomson Csf | POLARIZER DEVICE FOR MICROWAVE ANTENNA |
GB8501440D0 (en) * | 1985-01-21 | 1985-02-20 | Era Patents Ltd | Circularly polorizing antenna feed |
SE461179B (en) * | 1989-02-08 | 1990-01-15 | Saab Marine Electronics | DEVICE FOR Saturation of the level of a fluid present in a container |
SE504682C2 (en) | 1991-07-04 | 1997-04-07 | Saab Marine Electronics | Device for measuring the level of a medium contained in a container |
DE4336494C2 (en) * | 1993-10-26 | 1995-11-02 | Endress Hauser Gmbh Co | Device for level measurement in containers |
DE19922606B4 (en) * | 1999-05-17 | 2004-07-22 | Vega Grieshaber Kg | Arrangement of a waveguide and an antenna |
JP2001077620A (en) * | 1999-09-06 | 2001-03-23 | Alps Electric Co Ltd | Primary radiator |
EP1156302B1 (en) * | 2000-05-15 | 2004-09-29 | Krohne Messtechnik Gmbh & Co. Kg | Level measuring device |
US6661389B2 (en) * | 2000-11-20 | 2003-12-09 | Vega Grieshaber Kg | Horn antenna for a radar device |
WO2003046491A1 (en) * | 2001-11-26 | 2003-06-05 | Vega Grieshaber Kg | Antenna system for a level measuring device |
US7002528B2 (en) * | 2002-02-20 | 2006-02-21 | Prodelin Corporation | Circularly polarized receive/transmit elliptic feed horn assembly for satellite communications |
US6759976B1 (en) * | 2002-12-20 | 2004-07-06 | Saab Marine Electronics Ab | Method and apparatus for radar-based level gauging |
US6759977B1 (en) * | 2002-12-20 | 2004-07-06 | Saab Marine Electronics Ab | Method and apparatus for radar-based level gauging |
US6987481B2 (en) * | 2003-04-25 | 2006-01-17 | Vega Grieshaber Kg | Radar filling level measurement using circularly polarized waves |
US7106247B2 (en) * | 2003-10-20 | 2006-09-12 | Saab Rosemount Tank Radar Ab | Radar level gauge with antenna arrangement for improved radar level gauging |
DE102004022516B4 (en) | 2004-05-05 | 2017-01-19 | Endress + Hauser Gmbh + Co. Kg | horn antenna |
US7239267B2 (en) * | 2004-10-01 | 2007-07-03 | Rosemount Tank Radar Ab | Microwave sealing for radar level gauges |
DE102005036715A1 (en) * | 2005-08-04 | 2007-02-15 | Vega Grieshaber Kg | Fill level radar for determining fill level in tank, has separation element arranged directly at aerial for isolating aerial from feed device |
US7623064B2 (en) * | 2005-12-06 | 2009-11-24 | Arthur Robert Calderbank | Instantaneous radar polarimetry |
US7265558B1 (en) * | 2006-10-05 | 2007-09-04 | Rosemount Tank Radar Ab | Radar level gauge using elliptically or circularly polarized waves |
DE102009022511B4 (en) * | 2009-05-25 | 2015-01-08 | KROHNE Meßtechnik GmbH & Co. KG | Dielectric antenna |
US8800363B2 (en) * | 2010-12-02 | 2014-08-12 | Rosemount Tank Radar Ab | Radar level gauge with dielectric rod connection |
DE102011075636A1 (en) | 2011-05-11 | 2012-11-15 | Endress + Hauser Gmbh + Co. Kg | Level measuring device for determining and monitoring level of liquid in container, has antenna unit with coupling element radiating and receiving microwave in plane of polarization, which is arranged to waveguide and/or separator |
US8854253B2 (en) * | 2011-09-27 | 2014-10-07 | Rosemount Tank Radar Ab | Radar level gauging with detection of moving surface |
US8970424B2 (en) * | 2012-10-24 | 2015-03-03 | Rosemount Tank Radar Ab | Radar level gauge system with reduced antenna reflection |
-
2012
- 2012-10-24 US US13/659,021 patent/US8970424B2/en not_active Expired - Fee Related
- 2012-12-20 CN CN2012207114334U patent/CN203287080U/en not_active Expired - Lifetime
- 2012-12-20 CN CN201210559807.XA patent/CN103776512B/en not_active Expired - Fee Related
-
2013
- 2013-10-02 WO PCT/SE2013/000153 patent/WO2014065736A1/en active Application Filing
- 2013-10-02 EP EP13848726.9A patent/EP2912723B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP2912723B1 (en) | 2020-06-03 |
US8970424B2 (en) | 2015-03-03 |
CN103776512A (en) | 2014-05-07 |
WO2014065736A1 (en) | 2014-05-01 |
WO2014065736A8 (en) | 2015-05-21 |
CN203287080U (en) | 2013-11-13 |
EP2912723A4 (en) | 2016-06-29 |
US20140111371A1 (en) | 2014-04-24 |
CN103776512B (en) | 2018-12-07 |
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